KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

Guo Yuan Cheng; Xing Hua Fu; Xin Jin; Wen Hong Tao; Yu Qin Qiang

doi:10.4028/www.scientific.net/AMM.740.3

Paper Titles

Preface, Committees and Sponsors

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method
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Preparation Process of KNN-0.008BF Lead-Free Piezoelectric Ceramics
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Research on Expanded Graphite/Nitrate High-Temperature Composite Phase Change Materials
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Study on Properties of EPS Insulation Mortar
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The Performance of Cement-Based Self-Leveling Mortars Affected by Mineral Admixtures
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Morphology Evolution and Mechanical Properties of HNBR Composites Reinforced by HZMMA/Carbon Black during Curing Process
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Dielectric Properties of Mn, Co, and Ni-Doped LaSrFeO₃ Films with Different Annealing Atmosphere
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Effect of Grain Size on Erosion Wear of B₄C/TiC/Al₂O₃ Ceramic Nozzles
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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 740KNN-BF Lead-Free Piezoelectric Ceramics...

KNN-BF Lead-Free Piezoelectric Ceramics Synthesized by Sol-Gel Method

Abstract:

KNN-BF piezoelectric ceramics synthesized by sol-gel method in this experiment. By controlling bismuth and iron content in the system to study effects of them. We selected citric acid as metal chelator and ethylene glycol as esterification agent. PH maintained 5-6 during preparation of the sol. Sintering temperature of ceramic selected 1100°C. Preparation ceramics under these conditions and comparative analysis, the structure of ceramics is single perovskite and shap of crystals are square block. With the increase of x, properties of ceramics firstly increases and then decreases: d₃₃, ε_r, Q_m, K_p reaching the maximum, values of them were 136pC/N, 630(f =1KHz), 212, 0.41 respectively; dielectric loss to minimum is 0.07(f =1KHz); at this point, ceramics had best performance.

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Periodical:

Applied Mechanics and Materials (Volume 740)

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3-6

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.740.3

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Online since:

March 2015

Authors:

Guo Yuan Cheng, Xing Hua Fu*, Xin Jin, Wen Hong Tao, Yu Qin Qiang

Keywords:

Perovskite, Phase Transition, Piezoelectric Ceramics, Sol-Gel

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